German naturalist. Received a doctorate in Giessen in 1839; worked in Switzerland with Louis Agassiz on a treatise on fossil and freshwater fish until 1846. Professor of zoology, Giessen, 1846. Forced to leave the German Federation for political reasons, 1849; settled in Geneva. Professor of geology, Geneva, 1852; director of the Institute of Zoology, 1872.
Sources: ADBDSBJudel 2004 (See the bibliography for full references to sources)